My favorite silencers are cat whiskers. However, due a tip here I buy fishing jig skirts to save a buck or two and get different colors -- although it can be difficult to find these without sparkle. It takes a bit of moving them around to get the right spot. I also cut them so there is about 1" or less on each side of the string. I also use Sims string leaches and just this week a thing called "jacks" (rubber crosses). I have leaches and whiskers on a couple of bows. I used the yarn balls back in the early 70's a little but didn't like getting stick-tights in them. I have never used the string wraps (fur, etc.) that so many here use. I have no experience with those.
They must work though because so many folks use em. I think this will be something I have to look into.
The tip to tie or zip-tie (small ones) the whiskers to the string is good, especially to promote moving them up and down to find the right place. I've also used serving thread to tie cross over knots to hold them in place (the knot made when you actually tie the whiskers on can be pretty big and bothers me). Then, when you've found the perfect spot you can measure that down the string and reinstall the whiskers within halves of the string. This will keep the zip-tie off the string.
I hate to string and re-string my recurves tuning, silencing, etc. I'm always terrified (even after doing it so much over the years) of twisting a limb.